Document Detail

Existence of separate domains in lysin PlyG for recognizing Bacillus anthracis spores and vegetative cells.
MedLine Citation:
PMID:  22802245     Owner:  NLM     Status:  MEDLINE    
As a potential antimicrobial, the bacteriophage lysin PlyG has been reported to specifically recognize Bacillus anthracis vegetative cells only and to kill B. anthracis vegetative cells and its germinating spores. However, how PlyG interacts with B. anthracis spores remains unclear. Herein, a 60-amino-acid domain in PlyG (residues 106 to 165), located mainly in the previously identified catalytic domain, was found able to specifically recognize B. anthracis spores but not vegetative cells. The exosporium of the spores was found to be the most probable binding target of this domain. This is the first time that a lysin for spore-forming bacteria has been found to have separate domains to recognize spores and vegetative cells, which might help in understanding the coevolution of phages with spore-forming bacteria. Besides providing new biomarkers for developing better assays for identifying B. anthracis spores, the newly found domain may be helpful in developing PlyG as a preventive antibiotic to reduce the threat of anthrax in suspected exposures to B. anthracis spores.
Hang Yang; Dian-Bing Wang; Qiuhua Dong; Zhiping Zhang; Zongqiang Cui; Jiaoyu Deng; Junping Yu; Xian-En Zhang; Hongping Wei
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-07-16
Journal Detail:
Title:  Antimicrobial agents and chemotherapy     Volume:  56     ISSN:  1098-6596     ISO Abbreviation:  Antimicrob. Agents Chemother.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-09-13     Completed Date:  2013-02-01     Revised Date:  2013-07-12    
Medline Journal Info:
Nlm Unique ID:  0315061     Medline TA:  Antimicrob Agents Chemother     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5031-9     Citation Subset:  IM    
State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China.
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MeSH Terms
Bacillus anthracis / metabolism*,  ultrastructure
Microscopy, Electron, Transmission
N-Acetylmuramoyl-L-alanine Amidase / metabolism*
Protein Binding
Spores, Bacterial / metabolism*,  ultrastructure
Viral Proteins / metabolism*
Reg. No./Substance:
0/Viral Proteins; EC Amidase

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